Crushing machine



Feb. 10, 1953 G. E. KRIDER CRUSHING MACHINE 2 SHEETS--SHEET 1 Filed Oct. 2, 1950 FIG. 2

INVENTOR. GEORGE E. KR/DER Feb. 10, 1953 e. E. KRIDER CRUSHING MACHINE 2 SHEETS -SHEET 2 Filed Oct. 2. 1950 L 54 INVENTOR.

GEORGE E. KR/DER Patented Feb. 10, 1953 UNITED PATENT OFFICE :lhe present invention relates .-to an improved crushing machine and relates particularly to vvthe mechanism for releasing the-pressure on the crusher plate when the machine encounters some hard, or uncrushable object and for an improved '-means for adjusting the crusher plate.

It is therefore one object of-theinventionxto provide an improved .and novel meansand-ar- -,-rangement for adjustingythe crusher plate.

Another object of the invention is to provide a novel arrangement for mounting the plate adjusting means.

A further object of the invention is to provide a machine with such .structure'that itwill not easily become corroded, or clogged by the ma terial being handled.

With these and other objects in view, which will be more apparent as the nature of the machine is more fully disclosed, the invention consists of its novel construction, combination "and arrangement of parts which are illustrated in the accompanying drawings. and described in the detailed description, in which:

Figure 1 -isa top plan view of the improved machine.

Figure 2 is a side elevation of-the machine partly broken away to showmore clearly some of the improved features.

Figure 3--;is an enlarged fragmentary sectional plan view taken alongline 3-3 of Figure 2.

Figure 4 is a vertical fragmentary sectional view taken along-line 4-4 OI, F ure 13.

Fi ure 5 is a view similar to that shownin Figu 4 showin th cru h r-plate-in withdrawn po tio e y In referring to the drawings like-and s;i;milar numerals will be used todesignate like and similar parts throughout the several views.

i-cleim. (01.2;11-239) various kinds of materials, they are primarily used for crushing coal. The material is fed into a-hopper located above the roll and adjacent the upper portion of the frame, the'hopper being formed by sheeting Ill surrounding the sides of the hopper area and-the plate member I! to provide a front end for the hopper. The material -:is crushed by the toothed roll l2 rotating in the direction of the arrow (Fig. 2). The material is crushed by forcing the large pieces of material, such as coal, between the slots 48 in the crusher plate and the teeth 42 and 44 carried on the roll. The plate I! is provided'with slots H to allow the teeth in the crusher roll to pass through.

It so happens that not all the material getting into the hopper is crushable by the machine and means must be provided to temporarily free the machine by retracting the crusher plate 14 in order not to break the crusher plate or any of the other parts of the-machine, such as the teeth 42 and 44.

To accomplish this the crusher plate 14 ;is hinged adjacent the top of the frame and above roll on the rod H]. The plate is curved slightly inwardly and downwardly to form a back for the material hopper. The lower end of the plate extends around and approaches the under side of the roll. In this lower end of the plate there are slots through which the roller teeth pass .and it isthe operation of the teeth through these slots, that break up the material.

Various methods and devices have been-used 1 to hold the crusher plate in a particular location in. respect to the surface of the crusher roll and it is toward these features, tha the. presentin- Vent-ion is particularly directed.

The machine in general is-provided with a sta- V tionary base ID, a rotating roll l2 and a crusher plate [4. The roll is mounted insuitable bearings l8 and I8 located at each side of the frame. The

shaft 20 carrying the roll is preferably extended from one end of the frame and is adapted to receive a relatively large gear. 22. Tooperate the roll there is a driving-pulley 24, which is mounted on one end ofa shaft 26. The shaft 26 is carried in the bearings 28 and 30 mounted adjacent the lower side ofthe frame of the On the other end of the shaft 26 is a {The plate is resiliently held in adjustable position "by airame. or :rack designated by numerals 50. 5 5| and 54; and toggle or double linkmemhere 52 and 53, located between the rack and the crusher; plate- The rackis made up of a pair of ,angularly 1, disposed members and 5ll,- a bracingmember 5| and a plate member 54, which is :free to slide alcng members fastened to the lower side .-of

,the frame.

These members -50 and 59" form-a track ofv an outwardly extended angle of. approximately 30. degrees with a line running parallelwith the axis of the roll. Adjacent the ends of these angular track members are supports for .the linked, members 52 and 53. These supports are formed by :the members 60-,- 6ll, 52 and -63'. and

are for holding the link members perpendicular to the plate.

For positioning the rack which in turn positions the crusher plate through the double link members 52 and 53, are a pair of plates 55 and 56 having tapered edges 65 and 66'. The forward tapered edges of the plates 55 and 56 rest on the flat plate 54, and the rear edges of the plates 65 and 65 rest upon a member 58 running along the lower and rear portion of the frame. These tapered edges 55 and 56 are adapted to cooperate with the angular tracks 50 and 50 to position the rack relative to the axis of the roll. When the members 65 and 66 are moved outwardly the rack is movable toward the rear of the frame, moving the crusher plate away from the roll and when the members 65 and 65 are moved inwardly, the rack is moved toward the roll.

The members 55 and 65 are moved simultaneously by the toothed bars 76 and H and the pinion 12. The bar 10 is fixedly secured to the member 65 and the bar H is secured to the member 65. The pinion is located between the bars and therefore moves the two members 65 and 66 in opposite directions when rotated. The pinion is rotatably mounted to the frame by the bracket 14. At the upper end of the pinion shaft 15 is a hand wheel 76 for rotating the pinion. The hand wheel is provided adjacent its hub with small holes 18 for receiving a pin 79. The lower end of the pin is adapted to engage a block 88, or suitable aperture in the stationary frame to hold the wheel and pinion in position after adjustment.

As mentioned before the toggle, or double linked members extend between the rack and the crushor plate M. For illustration the member 52 is described in detail and is made up of two link members 52 and 52' which are hingedly connected by the pin 83. The opposite end of the member 52 abuts against the lower edge of the back of the plate l4 and the opposite end of the member 52 abuts against the member 60 carried by the rack. The two members 52 and 521 are hinged slightly ofl center, as shown best in Figure 4. The degree of the oif-center hinge is determined by the portion 52" of the member 52, which rests upon the upper surface of the member 52. The toggle is held in extended position by a chain or other flexible member 88 in which, one end is secured to a pin 84 carried in the portion 52, the opposite end extending downwardly over a roller 85, which is in turn carried on a bracket 81 fixedly secured to the bottom of the plate I4. The chain then extends upwardly to a tension spring 89,'the opposite end of which is fastened to the upper end of the plate M, or to the stationary frame if desired by an eye bolt 9 I. In order to keep the toggles in their proper position, there is provided a tensionspring 96, one end being fastened to the plate 34 and the opposite end fastened to the stationary frame of the machine as shown in Figure 2.

To adjust the crusher plate 14 relative to the roll 12, the pin 79 is first removed and the hand wheel is rotated to operate the pinion 15. If it is desired to move the crusher plate toward the roll the wheel is moved clockwise. The pinion through the bar members 10 and H will draw the members 65 and 66 inwardly, the beveled edges 65" and 66' will move along the angular track members 50 and 50, moving the crusher plate toward the roll through the toggles 52 and 53. If it is desired to move the crusher plate away from the roll, the hand wheel is rotated anti-clockwise, which will move the rack in the opposite direction. When the desired adjustment is made the pin 19 is again inserted to hold the wheel and pinion in position.

If the machine during its operation should encounter an unusually hard object the link members 52 and 53 will collapse against the tension of the spring 89 as shown in Figure 5, allowing the object to pass between the roll and plate, after which the plate will be returned to its normal operating position by the spring 89.

The present crusher is of simple and economical construction. The crusher plate adjusting means is so designed as to minimize jamming and clogging by dust and other particles, which are ever present in this type of operation.

While the invention has been illustrated and described in its preferred form, other forms may be utilized without departing from the general principles laid down herein and the scope of the invention is best defined in the appending claim.

I claim:

The combination with a hinged crusher plate and a rotatable crusher roll, means for adjusting said plate relative to said roll comprising, a rack located rearwardly of the plate and movable perpendicular thereto, at least one pair of upwardly diverging double links extending between the rack and the hinged plate and flexible holding means for normally holding the said links in extended position, the rack being provided with tracks at each end thereof forming an angle with the path of the rack, a pair of rack adjusting elements having tapered edges adapted to engage the angular tracks of the rack for holding the same in adjusted position, said adjusting element being movable laterally of the said frame for positioning the said rack toward and away from the said roll, a toothed bar fixedly secured to each of the adjusting elements, a single pinion adapted to engage the teeth of both bars, each bar engaging opposite sides of the said pinion for moving the said tapered adjusting elements laterally of the stationary frame, whereby the said rack may be moved perpendicular to the axis of the said roll, said link holding means extending between the underside of the double links and the lower end of the crusher plate, a support carried by the lower end of the crusher plate through which the flexible holding means may run, a pair of resilient spring member having one end supported along a line substantially in the plane oi the top of the crusher plate and the other end being attached to the said flexible holding means and means for adjusting the tension of the said holding means.

GEORGE E. KRIDER.

EtEFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 650,673 Dodd May 29, 1900 1,417,389 Krider May 23, 1922 1,826,157 Turucz Oct. 6, 1931 1,861,348 Krider May 31, 1932 2,312,823 Krider May 2, 1932 2,264,049 Miller Nov. 25, 1941 2,375,370 Krider May 8, 1945 

